I have found OpenSourceCoin and Florincoin, we want to use TX messaging in our own private coin but neither of these coins have a proper commit history. Anyone know a TX messaging coin with decent source code history?
– NachoCheeseApr 11 '16 at 12:13

2 Answers
2

The NXT Messaging system allows you to send and receive data on the
NXT Blockchain, thus allowing any Nxt account holder to communicate
directly with all other account holders.

Messages can be attached to any Nxt transaction, making bookkeeping
easy, as you can tag all your transactions with a description. Project
developers can use the Messaging system to embed machine-readable data
within an Nxt transaction. This allows automated functions by reading
the data sent to you on the blockchain.

Messaging is securely encrypted by default, but text or data can also
be sent unencrypted.

Ethereum does not have a messaging system by default but, because it is programmable and you can store arbitrary data in the blockchain (more exactly, in a Merkle tree whose root is in the blockchain), you can develop it fairly easily.